Oil the pivot bushes and stick the felts into their housings around the bushes. Hold one of the engine mounting brackets in place against the felt and bush face and insert the pivot through the bracket and into the bush. Note that the brackets are ' handed ' and must be fitted to the correct sides. The longer ear on each is the lower one to match up with the gearbox studs. The two bottom studs are closer together than the top ones. The pivots locate in the brackets.
Fit the other bracket and whilst holding them in place hold the fork horizontal and slide the whole assembly up to the frame pushing the brackets between the lugs on the frame. Register the bolt holes, fit the four bolts and tighten the nuts fully.